Commit 5cebdfea authored by Frederic Danis's avatar Frederic Danis Committed by Marcel Holtmann
Browse files

Bluetooth: hci_bcm: Fix IRQ polarity for T100 



ACPI table for BCM2E39 of T100TA is not correct.
Set correct irq_polarity for this device.

Signed-off-by: default avatarFrederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 594b31ea

drivers/bluetooth/hci_bcm.c

+25 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#include <linux/gpio/consumer.h>

#include <linux/tty.h>

#include <linux/interrupt.h>

#include <linux/dmi.h>



#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>
@@ -513,6 +514,22 @@ static const struct acpi_gpio_mapping acpi_bcm_default_gpios[] = { 
};



#ifdef CONFIG_ACPI

static u8 acpi_active_low = ACPI_ACTIVE_LOW;



/* IRQ polarity of some chipsets are not defined correctly in ACPI table. */

static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {

	{

		.ident = "Asus T100TA",

		.matches = {

			DMI_EXACT_MATCH(DMI_SYS_VENDOR,

					"ASUSTeK COMPUTER INC."),

			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),

		},

		.driver_data = &acpi_active_low,

	},

	{ }

};



static int bcm_resource(struct acpi_resource *ares, void *data)

{

	struct bcm_device *dev = data;
@@ -552,6 +569,7 @@ static int bcm_acpi_probe(struct bcm_device *dev) 
	const struct acpi_device_id *id;

	struct acpi_device *adev;

	LIST_HEAD(resources);

	const struct dmi_system_id *dmi_id;

	int ret;



	id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
@@ -608,6 +626,13 @@ static int bcm_acpi_probe(struct bcm_device *dev) 


	acpi_dev_get_resources(adev, &resources, bcm_resource, dev);



	dmi_id = dmi_first_match(bcm_wrong_irq_dmi_table);

	if (dmi_id) {

		bt_dev_warn(dev, "%s: Overwriting IRQ polarity to active low",

			    dmi_id->ident);

		dev->irq_polarity = *(u8 *)dmi_id->driver_data;

	}



	return 0;

}

#else